Posted on Sun 19 January 2025 in Leetcode • Tagged with pointers, reverse-thinking
Question Link : https://leetcode.com/problems/trapping-rain-water/
Difficulty: Hard
Premium: False
Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it can trap after raining. Example 1:
Input: height = [0,1,0,2,1,0,1,3,2 …
Posted on Sun 19 January 2025 in Leetcode • Tagged with bfs-grid, reverse-thinking
Question Link : https://leetcode.com/problems/pacific-atlantic-water-flow/
Difficulty: Medium
Premium: False
There is an m x n rectangular island that borders both the Pacific Ocean and Atlantic Ocean. The Pacific Ocean touches the island's left and top edges, and the Atlantic Ocean touches the island's right and bottom edges …
Posted on Tue 22 March 2022 in Leetcode • Tagged with reverse-thinking, puzzle
Question Link : https://leetcode.com/problems/broken-calculator/
Difficulty: Medium
There is a broken calculator that has the integer startValue on its display initially. In one operation, you can:
multiply the number on display by 2, or subtract 1 from the number on display.
Given two integers startValue and target …